Micro-Channel and RTPF Heat Exchangers

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Redefining Thermal Performance: Micro-Channel and RTPF Heat Exchangers from Dolphin Manufacturing

At Dolphin Manufacturing LLC we take pride in designing and manufacturing high-performance heat exchangers that serve critical applications across HVAC&R, power generation, industrial processing, and marine sectors.

From round-tube plate-fin (RTPF) to Micro-Channel Heat Exchangers (MCHX), our advanced coil technologies are engineered to meet demanding thermal and service requirements. We serve a wide range of HEX systems and sectors:

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  • Hot water, steam, chilled water, DX, and condenser coils for heating, cooling, and heat recovery.
  • Turbine inlet air cooling, designed with no moving parts in airflow, increasing operational safety.
  • Air handling units, ventilation systems, and machine lubricant oil cooling, with optional turbulators.
  • Marine and offshore coils (e.g., CuNi), resistant to harsh saline environments.
  • Industrial coils up to 13 meters, used globally in Dry-Air Coolers and Air-Cooled Condensers.
  • Custom designs for paper, chemical, and other high-performance industrial processes.

In projects where RTPF is not optimal design solution, we provide Micro-Channel alternatives that bring:

  • Lower airside pressure drops and reduced fan energy consumption.
  • Smaller internal diameters, cutting down on refrigerant charge.
  • Single-metal designs, eliminating potential issues with galvanic corrosion.
  • Brazed fin-to-tube metallurgical bonding, maximizing surface contact and heat transfer.
  • Turbulent flow regimes in tiny refrigerant passages, raising internal HTC and efficiency.

We also offer Heat Recovery Heat Pipes (HRHPs) – passive exchangers that transfer thermal energy from exhaust to fresh air, without mixing air streams. This technology enhances HVAC efficiency, cuts energy consumption, and improves indoor comfort — all while reducing carbon footprint.

For RTPF- coils, we offer smaller diameter tubes and varied microfin geometries to break laminar refrigerant flow, enhancing refrigerant-to-wall contact and improving inside-tube HTC (α).

At Dolphin, our mission is to deliver engineered heat transfer solutions that perform reliably, efficiently, and safely in real-world conditions — whether on land, sea, or in the heart of industry.